Texas DPS says some endorsements require a CLP holding period and Entry-Level Driver Training. How does that affect a first-time S applicant?

1. The applicant can add S by paying a fee only
2. The applicant can skip federal training if the route is local
3. The applicant should plan for CLP, ELDT, knowledge, and skills-test steps before adding S
4. The applicant only needs a school district letter